And surprise, according to the people putting this list together, it's not Rockstar. Why? Because while Rockstar is a single entity in terms of publishing, there are, at last count, eight Rockstar development studios. And they had to be counted individually, meaning only one Rockstar team - Rockstar North (ie the main GTA team) - made the cut.

Its 11th-placed finish, only one spot behind Valve, is because the survey (by researchers GameQuarry) counted both quality and quantity. So while teams like Rockstar, Valve and Infinity Ward (at #19) do great games when they do them, they don't do them as often as the list's top four do.

Atop the list are Visual Concepts. Never heard of them? They're a former Sega team, and are the studio behind 2K's consistently-excellent sports games. Following Visual are another sports studio, EA Tiburon (the Madden guys), followed by Nintendo, followed by another sports team, EA Sports (FIFA).